In this paper, we present quality of service (QoS) metrics for various network applications based on
human factors and technology attributes. The first term, human factors, addresses human perception of different
kinds of media, such as conventional text, audio and video. The second term, technology attributes, represents the
different technological aspects of these network applications, such as time-dependence and symmetry. Both of these
terms are key factors that lead to variations of requirements for QoS. Establishing these requirements is paramount
to providing QoS on computer networks and the Internet. With the metrics presented in this paper we can provide
the criteria necessary for such QoS assurance.